tripletail

noun tri·ple·tail \ ˈtri-pəl-ˌtāl \

Definition of tripletail

: a large marine bony fish (Lobotes surinamensis of the family Lobotidae) of warm and tropical waters that has long dorsal and anal fins which extend backward and together with the caudal fin appear like a 3-lobed tail

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First Known Use of tripletail

circa 1803

in the meaning defined above

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